Radiation image storage panel

Abstract

A radiation image storage panel comprising a substrate, a fluorescent layer provided on the substrate and composed of a binder and a stimulable phosphor dispersed therein, and a protective layer provided on the fluorescent layer. The panel is edge-reinforced by coating the edge faces thereof with a polymer material comprising polyurethane or acrylic resin.

We claim: 
     
       1. A radiation image storage panel comprising a substrate, a fluorescent layer provided on said substrate and composed of a binder and a stimulable phosphor dispersed therein, and a protective layer provided on said fluorescent layer, characterized in that edge faces of said panel are coated with a polymer material comprising polyurethane or acrylic resin. 
     
     
       2. A radiation image storage panel as defined in claim 1 wherein said polymer material consists solely of said polyurethane. 
     
     
       3. A radiation image storage panel as defined in claim 1 wherein said polymer material consists solely of said acrylic resin. 
     
     
       4. A radiation image storage panel as defined in claim 1 wherein said polymer material consists of said acrylic resin and vinyl chloride-vinyl acetate copolymer mixed therewith. 
     
     
       5. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a polyaddition reaction product of diisocyanate with glycol represented by the general formula   --CONH--R--NHCOO--R'--O--.sub.x     wherein R and R' represent a divalent atomic group and x is an integral number satisfying the condition of 1<x<800.   
     
     
       6. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a polycondensation reaction product of bischloroformate ester with diamine represented by the general formula ##STR8## wherein R and R' represent a divalent atomic group and x is an integral number satisfying the condition of 1<x<800. 
     
     
       7. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a polycondensation reaction product of bisurethane with glycol represented by the general formula ##STR9## wherein R and R' represent a divalent atomic group and x is an integral number satisfying the condition of 1<x<800. 
     
     
       8. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a polycondensation reaction product of biscarbamoyl chloride with glycol represented by the general formula ##STR10## wherein R represents a divalent atomic group and x is an integral number satisfying the condition of 1<x<800. 
     
     
       9. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a heat polymerization reaction product of oxyacid azide represented by the general formula ##STR11## wherein x is an integral number satisfying the condition of 1<x<800. 
     
     
       10. A radiation image storage panel as defined in claim 1 or 2 wherein said polyurethane is a polycondensation reaction product of trichloroacetate of glycol with diamine represented by the general formula ##STR12## wherein R represents a divalent atomic group and x is an integral number satisfying the condition of 1<x<800. 
     
     
       11. A radiation image storage panel as defined in claim 1, 3 or 4 wherein said acrylic resin is polymethyl methacrylate.